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Electric Master/Battery Relay
#1
who's installed a master switch on their ship? my machine came with a physical battery disconnect underneath the passenger seat, i'm wanting to swap it out for a remote electric master relay.
for fault protection and redundancy reasons i still want the alternator to be in parallel so if the battery becomes disconnected in flight the alternator is still producing a charge.

in my head this sounds simple enough, i'm curious who is actually utilizing a master.
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#2
(05-25-2026, 11:51 PM)Lyle Swallows Wrote: who's installed a master switch on their ship? my machine came with a physical battery disconnect underneath the passenger seat, i'm wanting to swap it out for a remote electric master relay.
for fault protection and redundancy reasons i still want the alternator to be in parallel so if the battery becomes disconnected in flight the alternator is still producing a charge.

in my head this sounds simple enough, i'm curious who is actually utilizing a master.

One of the 6 ships that I have here has a master switch with a battery disconnect relay. I do not have a wiring diagram for this setup.
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#3
I have.  Works great.  Standard continuous duty battery disconnect relay.  Installed the relay near the battery on the battery box.
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#4
i'm liking the idea of a latching relay which doesnt take any current to keep its state.

i'm wanting to use one for a EarthX lithium battery install and prevent parasitic drains from external regulators like i have heard of. a battery to bus disconnect just makes sense also.

i am mindful of lithium battery BMS's and battery disconnects can surge an alternators current if disconnected from whatever even shuts if off. so there's a few alternator protection devices out there for this use. Balmar makes one specifically for the use of lithium batteries. Balmar APM-12

i'm working on making my own master wiring diagram for my ship and systems.
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